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1. Drawbar Thread 7/16" - 20TPI
2. Spring collets are hardened and ground for maximun holding power and ultra precision
3. 8 pcs R8 set includes: collet chuck, 7 full grip collets 1/4", 5/16", 3/8",1/2", 5/8", 3/4", 1" and spanner wrench
1. Fast single tool changing - no need to touch drawbar after inserting master holder
2. Spring collets are hardened and ground for maximum holding power and ultra precision
3. R8 shanks ultilize a drawbar thread: 7/16" - 20
4. Collets must be snapped into nut before inserting and tightening into holder
5. 8 pcs R8 set includes: collet chuck, 7 full grip collets 1/4", 5/16", 3/8",1/2", 5/8", 3/4", 1" and spanner wrench
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