RIDGID introduces the 18-Volt HYPERDRIVE 18-Gauge Brad Nailer Maintenance Kit. This brad nailer maintenance kit allows for easy onsite maintenance of your 18-Volt Lithium-Ion Cordless Brushless HYPERDRIVE 18-Gauge Brad Nailer. With a few easy steps this kit will have your brad nailer working like new. This kit includes an elevator piston assembly, a drive piston assembly, a grease packet, (4) 4 mm end cap screws, (1) combination tool, and maintenance instructions. RIDGID - R09890B MAINTENANCE KIT - AC10290