Replace the worn or broken shaft ring and spring in the Metabo HPT Nailer models with these new Metabo HPT 877826 Feeder Shaft Ring and 877851 Feeder Spring replacement parts. The 877826 is made of rubber material and is designed for securing pins and shafts in place. The 877851 is made of metal material and is designed to have the feeder return to its original position. These Metabo HPT 877826 Feeder Shaft Ring and 877851 Feeder Spring replacement parts are compatible with the Metabo HPT models: NV65AC, NV83A2, NV65AA, NV65AB, NV83A, NV83A3, NV83A4, NV83A5M, NV45AB2, NV45AB2(S), NV45AE, NV50AP3, NV65AH, NV75AG, NV50A1, NV50AA, NV50AP2, NV85AG, N5008A1, N5008AA, NV45AA, NV45AB, NV83A111, NV90AG, NV45AB2M, NV50A1M, NV65AH2M, NV75A5M, NV83A5M, NV90AGSM, NV90HMC, NV45AB3, NV45AES, NV50AH, NV65AD2, NV65AD3, NV65AH2, and NV90AG (Sold Separately). Please reference the tool manual before purchasing to ensure the proper fit and care of these tool parts. These are Metabo HPT power tool replacement parts.