Replacement drill bit for the best drilling results. Replacement drill bit for CENTROTEC countersink drill bits with depth stop. Fast installation and securing via a grub screw on the drill countersink. Drilling and countersinking in a single pass in various materials such as wood, aluminium, acrylic, mineral material|Furniture manufacture|Kitchen fitting|Assembly work. for drill countersink BSTA HS D 4.5 CE (item no. 492524)