Straight Shank Twist Drill Bits 11.5mm HSS 4341 with 11.5mm Shank 2 Pcs Walnut Color Grommets Size (approx): 6mm inside

Grommets Size (approx):  6mm inside diameter

Total Size: 21x12

especially the inner diameter of the tube

Cost effective coupling design

Rated Capacity: 9uF

Straight Shank Twist Drill Bits 11.5mm HSS 4341 with 11.5mm Shank 2 Pcs Walnut Color Grommets Size (approx): 6mm insideSpecification: Cutting Edge Diameter : 11. 5mm 0. 45" Shank Diameter : 11. 5mm 0. 45" Cutting Edge Length: 98mm 3. 86" Shank Length : 40mm 1. 57" Total Length : 140mm 5. 51" Cutting Direction: Right Hand Material: High Speed Steel 4341 Finish: Black & Gold Oxide Finish Shank Type: Round Shank Type: Hot Rolling Package: 2 Pcs x Reduced Shank Twist Drill Bits Description: 1. High speed steel straight shank drill bits are good for most general purpose