for Metabo HPT (1) 886107 Guide Lock and (1) 880446 Spring as shown in the picture. 886107 Guide Lock and 880446 Spring tool replacement parts. Made of durable metal material, these tool parts are built to last. The 886107 Guide Lock and 880446 spring are both compatible to Nailer tool models such as NV65AH, NV75AG, NV85AG, NV50AE, NV65AH2M, NV75A5M, NV65AH2, NV90AB2 ; while the 880446 spring is also compatible with many other Nailer tool models such as NV50AP3, NV50AG, NV85AG, NV45AC, NV90HMC, NV50AH, NV65AD2, and NV90AB