Campbell Hausfeld  Chisel Spring  Steel  3 *Product Type: Chisel Spring *Kit: No *Number in Package: 1 pc. *Weight: 0.3lb. *Material: Steel *Color: Black *Thread Size: 3-3/4 in. *Housing Material: Steel *Used to secure chisel during operation*Safety and shock absorption * For use with Campbell Hausfeld air hammer Ace No. 8400434 (TL050300AV) and most typesof air hammers