Diaphragm design eliminates troublesome shaft seal
tinning properties are excellent
This blade is very strong and versatile
Split ring and internal barb keep pipe in round
A unique heat treatment process strengthens the chisel for impact resistance and stability
National Nail Buglehead Deck Screw, Star Drive, 3" X #9, Tan, 100CT Security Diaphragm design eliminates troublesome shaftMultipurpose deck screws for face fastening wood deck boards and securing other exterior wood to wood connections Type 17 slash point for fast starts and no pre drilling Buglehead draws board tight, finishing flush 2 3 thread design offers premium holding power T 20 and T 25 Star Drive reduces cam outs and eliminates excessive wear on the screw head and bit 1 in. (31. 8mm), 1 in. (41. 3mm), 2 in. (50. 8mm), 2 in. (63. 5mm), 3 in. (76. 2mm), 3 in. (88.