The P635 is ideal for finishing and detailed woodworking. The GREX P635 sports a lightweight aluminum (not plastic) extruded magazine; stair-stepped magazine, increasing access to tighter areas and more angles; automatically adjusts to pin size, accepts headless pins from 3/8" to 1 3/8"; the rear magazine cap allows for both hex wrench and spare no-mar tip storage; a durable yet operator friendly magazine latch; and last but not least a fastener supply window showing pin supply.