I've had probably 10 of the darn hammers over the years. Never broke one but have bent the aluminum hammer shaft. I have one that a fellow gave me(RCBS) that the cap has a piece of tape holding it together kinda sorta. Only thing I don't like on them is the 3 piece collet with the o ring sucks/breaks/falls out. PITA but I usually use a regular shell holder to hgold the case. Gotta take the bullet and powder out anyway. Oh and for the last 4 or 5 yrs I use a 20 lb chunk of lead to hit the hammer on. Haven't even chipped a piece off the hammer since. I "pulled" more than 600 30 cal match bullets from someone else's reloads for the components last year. Hey they were free. Those bullets cost over 30 bucks a 100. Yep...I am cheep!