Gator Tech-Tru Chucks.

3-Jaw Forged Steel Body Front Mount Chuck PS-3 Series 2 Piece Jaws Plain Back		3-Jaw Semi - Steel Body Front Mount Chuck PS-3 Series Hard Solid One Piece Jaws Plain Back		3-Jaw Semi-Steel Body Front Mount Chucks PS-3 Series 2 Piece Jaws Plain back		4-Jaw Semi-Steel Body Front Mount Chucks PS-4 Series 2 Piece Jaws Plain back

Chuck Size	Part Number	Chuck Size	Part Number	Chuck Size	Part Number	Chuck Size	Part Number
3 1/4 "	1-106-0301*	3 1/4 "	1-202-0301*		-	-	-
4"	1-106-0401*	4"	1-202-0401*		-	-	-
5"	1-105-0501	5"	1-202-0501*	5"	1-201-0501	-	-
6 1/4"	1-105-0601	6 1/4"	1-202-0601*	6 1/4"	1-201-0601	6 1/4"	1-203-0601
8"	1-105-0801	8"	1-202-0801*	8"	1-201-0801	8"	1-203-0801
10"	1-105-1001		-	10"	1-201-1001	10"	1-203-1001
12"	1-105-1201		-	12 1/2	1-201-1201	12 1/2"	1-203-1201
15 3/4"	-		-	15 3/4"	1-201-1601	15 3/4"	1-203-1601
* One Piece Solid Jaws