Grex P635 is a 23 Ga. Headless Pinner with a fastener range of 3/8" to 1-3/8". It is a high-performance precision tool that has become an industry standard in driving the smallest nails. With its precision machining and carefully selected materials, the Grex P635 ensures consistent high performance and adherence to Grex's high-quality standards. The fine and narrow tip of the driver allows for precise fastening, making it ideal for delicate and intricate work.