GRK 01099 R4 Pro-Pak Multi-Purpose Framing Screw, #9 x 2", 690-Count N/A uses a built-in dimmer that

uses a built-in dimmer that is not intended to be used with other dimmers

All doors feature convenient

Precision honed C3 tungsten carbide tips hold edge longer

metal (nails and staples)

Ultratherm insulation in body

GRK 01099 R4 Pro-Pak Multi-Purpose Framing Screw, #9 x 2", 690-Count N/A uses a built-in dimmer thatThis design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4 screws 2" and longer have a four threaded CEE Thread. This enlarges the screw hole for the non threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the