FEATURES-4 pack-100 grain-.035 SS Lutz blades-Super Steel ferrule-4-edge, bone-splitting tip-Alcatraz bladelock-1" + 1" = 2" total cutPRODUCT SPECIFICATIONS:Dimension 0.50 X 6.05 X 9.10Height 0.5000Width 6.0500Length 9.1000MATERIAL STEEL FERRULEMECHANICAL NFIXED YGRAIN 100DIAMETER 1"OTHER FEATURES: 100% STEEL FERRULE,ALCATRAZ BLADELOCK SYSTEM,.035 S/S LUTZ BLADES,& 4-EDGE BONE SPLITTING TIP,4 HEADS PER PACK 1" 4-BLADE DESIGN OUT CUTS SEEMINGLY LARGER 1 1/8" 3-BLADE DESIGNS BY 18% FOR LARGER HOLES,MAXIMUM BLEEDING, & SHORTER BLOOD TRAILS