Genuine, OEM Replacement Part Replacement end cap, part number 9R209716 Compatible with: SB1850BN, SB1850BN, BN200SB, BN200SB, SWK1850BN, BTFP1850K, FMFP71928, CMPBN18SB, SB-1850BN, SB-1850BN, SB-1842BN, SB-1850BN, SB-2IN1, SB-2IN1, SB-1850BN, SB-125BN, SB-100SX, SB-150SX Measures approximately 1.95 X 1.90 X 1.00 inches Replacement for Black & Decker OEM End Caps part# 9R209716. Compatible with: SB1850BN, SB1850BN, BN200SB, BN200SB, SWK1850BN, BTFP1850K, FMFP71928, CMPBN18SB, SB-1850BN, SB-1850BN, SB-1842BN, SB-1850BN, SB-2IN1, SB-2IN1, SB-1850BN, SB-125BN, SB-100SX, SB-150SX