Genuine, OEM Black & Decker Replacement Part Black & Decker replacement spring, part number 90566944 Compatible with: ST8600, GH900, LST300, LST320C, CMCST900B, CMCST900D1, CMCST900D1, LST522, LST201, LST201, LST140C, LST136B, LST136, CMCST915B, CMCST915D1, BESTA512CM, BESTA510 Measures approximately 0.90 X 0.85 X 1.45 inches USED ON MODELS 98020SE Type 1, GH610 Type 1, GH900 Type 1, GH912 Type 1, LST120 Type 1, LST136 Type 1, LST136 Type 2, LST136B Type 2, LST220 Type 1, LST300 Type 1, LST300 Type 2, LST400 Type 1, LST400 Type 2, LST400-1 Type 2, LST420 Type 1, LST522 Type 1, NST2118 Type 1,