John57 I am not sure which head you got , but I know that the Delta has a 11/32 ferrule
 http://www.bowhuntingaustralia.com/cart/agora.cgi?cart_id=5796350.24384*kQ3at6&product=Broadheads_Glue-on  
And here is a pic of one of my Deltas on a 11/32 Shaft  

the 100gr spirit and the 125gr javelin models have a 5/16" ferrule, while the rest have a 11/32" ferrule, and they fit steel and alloy adaptors fine in my experience.

i think the 155gr concords are an inherently weeker head, and easier to damage. i'd like to try some of the 190gr ones one day. the rest are plenty tough though. i've done some nasty things to some 100gr and 160gr tuskers, and they are still going strong, and still spin true. good heads, great price.

I use screw in adapters in the tuskers with a good fit. If they don't fit your shafts you are using oversize shafts, or buying 5/16 size broadheads for 11/32 shafts.
That is not the broadheads fault.

I agree with the soft steel comment on these.  I do think they would be great for small game though.

Phil

Phil:
How did you come to the conclusion these have soft steel?
I have yet to see spring steel that is soft.

the steel in all my tuskers is definately harder than that of my ribteks.
it holds a better edge, and is much less likely to become dull in the quiver in my experience.

saying that though, ribbies are also a great head.

Traded for some, and then traded them away, Tusker Concorde.  Still have 7.  Prefer Magnus Mag I, Ribtek, STOS, and Zwickey.  Never sharpened or shot them.

Quote from the Tusker site.
"Tusker Broadheads  
Tusker Broadheads have been produced in Australia since 1964 they are made from spring steel hardened to 50 Rockwell strength with spot welded ferrules ....."

Guys...a Tusker test was done today on my post...
"farm hunt"....they certainly do the job!!  

I've shot the Concordes through steel drums and through steel belted tires without damage.  I had to shoot one several times into concrete to damage it.  I've yet to find ribs, spines, and shoulderblades that are harder to shoot through than steel.  I think the new Concorde's would be even better.

Pete, That might be it. I think most BH's Magnus, Zwekies, STOS, Grizzlies and My fav. Ace are atleast 54+ Rockwell...... I wouldn't buy a knife that was 48- 50Rw.... Just to soft to hold a real good edge. That's also why I don't like    Ribtek and Cheetah. Just too soft....And you can really tell the differance after you take them out of a bowquiver afew times. If'n it won't shave hair easily I ain't going to shoot a deer with it.

I think I will stick with my Woodsmans for now. Jim.

I think they are about the best b'head around ....they are TOUGH girls and boys!!!!!! And the price is always good. my most reliable head ....and i shoot a lot of b'heads.
give 'em a try

I think for the average guy over there who only hunts once a year IE Deer season ,, it's fine to shoot the more expensive heads . Over here we hunt all year round  and take a LOT of game and shoot a LOT of arrows .
 I once bought some Muzzy heads at $65 for 6 and broke 5 of them in an afternoon hunt on Goats    :mad:  
 The Tuskers are a good head at a good price and have the numbers of game on the scoreboard to boot    
 They may be a little softer than some of the heads you fellas shoot , but not to the point of being able to be bent easily in the fingers    :rolleyes:

I did some checking when the soft broadhead thing came up between Magnus and Zwickey. I was a bit surprised to learn almost all two blade broadheads are lists at 48-50 Rockwell C.

Many of folks favoritehead they claimed were harder than most turned out to be 50 RC. There was a couple folk that guessed correctly though.  

Now that Darkegreen busted that bubble there must be another fault to complain about.

Blast from the past. I have a set of these (160 grain long Hill looking ones). I have tried sharpening them the way the directions say and they just won't get real sharp for me. Any suggestions from you folks using them? I have them mounted on a special set of woodies and would really like to take them out this year.

I use 2 files set at 21 deg in a block for all my 2 blades. Set the files to toutch eachother at the fromt so you sharpen the full edge.
After they are sharp I do a few very light strokes drawing them the oposite direction.

Pete

I was surprised to see any negative comments about these heads. I bought some Concordes for my twelve yr old, with his short, 40lb draw. They are long, and narrow. He gets great penetration with them, and his arrows fly perfectly.

To get them sharp, I used a file to get the angle close,
then a clamp made by GATCO.(Similar to a Lansky)
The stones on the GATCO are wider than the Lansky.
This gets them scary. The steel was medium, and takes plenty durable edge. The final edge is 22
degrees. I have no doubt these will be good medicine for our local whitetails.

I use the same system that Pete uses regarding the sharpening of these broadheads and can get them razor sharp...it ususally takes less than 5 minutes to take one from being unsharpened to hunting sharp...just my .02!!