Diamond Core Drills: 1/4″ Shaft. High quality nickel plated diamond on steel blanks.
Diameters available: 13mm (~1/4″), 16mm (~5/8″), 19mm(~3/4″), 25mm (~1″), 32mm (~1-1/4″), 38mm (~1-1/2″) & 50mm (~2″)
Cautions: Maximum Speed Ratings: 13mm, 16mm, 19mm: 1500rpm, 25mm, 32mm, 38mm, 50mm: 1000rpm. Always wear safety goggles. Always wear an appropriate mask so you do not breath in particulates and harmful vapors. Always wear hand and body protection. Failure to adhere to these cautions may result in serious injury or death.