* Hole Saw Contents: 7/8", 1-1/8", 1-3/8", 1-3/4", 2", 2-1/2", 3", 3-5/8", 4-1/8", 4-1/2"
* Arbor:
Triangle Shank 1/4" fits hole saws 7/8", 1-1/8"
Triangle Shank 7/16" fits hole saws 1-3/8", 1-1/2", 1-3/4", 2", 2-1/2", 3", 3-5/8", 4-1/8", 4-1/2"
SDS Plus Shank fits hole saws 7/8", 1-1/8"
* Extension Bar: 12" length fits shank 7/16" arbor
* Hex Key: 4mm