SRAM NX | Apex 1 cassette 11-speed PG-1130 11-42 teeth The PG-1130 cassette allows the inexpensive entrance into 1x11 drives. They fit perfectly into the NX MTB 1-Section and the Apex 1 ROAD 1-Section. The PG-1130 is a rugged cassette with large 11 - 42t translation. She comes in a nice black finish. Technical specifications: Material pinion: steel Material Spider: aluminum Switching stages: 11 Gradation: 11-13-15-17-19-22-25-28-32-36-42 Color: Black Weight: 538g Note: Cassette NOT fit on SRAM XD freewheels.