Product details:
Includes: 1 STD500NP, 1 STD1000DGNP, 1 STD2000DGNP and 1 SDGMINI*Special nickel alloyed steel heat treated for durability. Non-plated material with light oil coating to prevent rust. *Centers the holes on pipes, dowels and outside corners. Flat side allow 90 drilling into flat surfaces-just clamp and drill.. Automatically squares up the drill with the surface. Alignment marks on both sides, to line up on center. *Bottom surface is precision ground to ensure stability and accurate perpendicular alignment on flat surfaces. Round stock hole alignment marks on one side. *Prevents drill bit wander. Portable, pocket-sized and hoin a handy plastic storage case w/surface ridges to prevent opening, PegBoard-FriendlyTM.