Drillco® Combined Centre Drill & Countersink, #7, 1/4" Small Diameter, 5/8" Large Diameter, High Speed Steel Pneumatic Oil Pumps and stability compared to Tylon™

and stability compared to Tylon™ 3

Includes: 1 (114340) Ring back-up PTFE

Includes: Dust bad

Optimized weight for maximum balance and control

small lathes using water soluble or light cutting oil

Drillco® Combined Centre Drill & Countersink, #7, 1/4" Small Diameter, 5/8" Large Diameter, High Speed Steel Pneumatic Oil Pumps and stability compared to Tylon™When metal parts are machined on centres as in turning or cylindrical grinding, it is always necessary to drill and countersink the centre holes to serve as seats or bearings in the machine centres Specifications Material High Speed Steel Number Size #7 Small Diameter 1 4" Decimal Size 0. 25" Large Diameter 5 8" Countersink Angle 60 Overall Length 6" Finish Bright Type Plain Country Of Origin China