Replacement parts: Plate Dwb-180445, Seal Dwb-180446, O Ring Dwb-180448, Spring Dwb-180447, Head Valve Body Dwb-180450-s, washer Flat Dwb-180449 Plate Dwb-180445, Seal Dwb-180446 Fits Models: BT1855K 18 Gauge Brad Nailer Kit (Type 10152000 and Higher) SL1838BC 18 Gauge Cap Stapler (Type 151230000 > higher) SL1838BC 18 Gauge Cap Stapler (Type 0) BTFP12233 Smart Point 18 GA Brad Nailer Kit (Type 1) EHF1838K 18 Gauge Flooring Stapler (Type 0) BT1855K 18 Gauge Brad Nailer Kit (Type 0) SX1838K Oil-Free Stapler (Type 0) LHF2025K 20 Gauge Flooring Stapler (Type 0) BT1855K 18 Gauge Brad Nailer Kit (Type 12340000 and Higher) DWFP12233 18 Ga Precision Point Brad Nailer (Type 1) O Ring Dwb-180448, Spring Dwb-180447, Head Valve Body Dwb-180450-s Fits Models: SB-1850BN 2 Inch 18 Gauge Brad Nailer Kit (Type 14065000 and Higher) SB-1850BN 2 Inch 18 Gauge Brad Nailer Kit (Type 1) SB-125BN Brad Nailer (Type 0) BT1855K 18 Gauge Brad Nailer Kit (Type 10152000 and Higher) SL1838BC 18 Gauge Cap Stapler (Type 151230000 > higher) SB-2IN1 2-In-1 Narrow Crown Stapler/18 Gauge Brad Nailer (Type 0) SL1838BC 18 Gauge Cap Stapler (Type 0) SB-150SX Finish Stapler (Type 0) BTFP12233 Smart Point 18 GA Brad Nailer Kit (Type 1) SB-100SX Pneumatic Stapler (Type 0) washer Flat Dwb-180449 Fits Models: SB-1850BN 2 Inch 18 Gauge Brad Nailer Kit (Type 14065000 and Higher) SB-1664FN 16 Gauge Straight Finish Nailer Kit (Type 14148000 and higher) SB-1850BN 2 Inch 18 Gauge Brad Nailer Kit (Type 1) SB-1664FN 16 Gauge Straight Finish Nailer Kit (Type 1) SB-125BN Brad Nailer (Type 0) BT1855K 18 Gauge Brad Nailer Kit (Type 10152000 and Higher) SB-1664FN 16 Gauge Straight Finish Nailer Kit (Type 15335001 and Higher) SL1838BC 18 Gauge Cap Stapler (Type 151230000 > higher) SB-2IN1 2-In-1 Narrow Crown Stapler/18 Gauge Brad Nailer (Type 0) SB-1664FN 16 Gauge Straight Finish Nailer Kit (Type 0) Packaging: 1 set of 6 parts (DWB-180445, DWB-180446, DWB-180448, DWB-180450-S, DWB-180449, DWB-180447) Replacement parts Plate Dwb-180445, Seal Dwb-180446, O Ring Dwb-180448, Spring Dwb-180447, Head Valve Body Dwb-180450-s, washer Flat Dwb-180449. This head valve is designed for seamless compatibility with multiple nail gun models including BT1855, SB-2IN1, SX1838, SB-1850BN, SB-1842BN, SB-150SX, and SL1838BC series tools. this component helps maintain proper air pressure and firing sequence in your tool.