Forward Controls Design SRO Battery Tool Silver/Green. The SRO Battery tool addresses angled engagement issues when using standard drivers on partially obstructed battery covers reducing the risk of cross-threading or damage. Constructed from 17-4 stainless steel with a narrowed midsection the tool maintains perpendicular alignment during use. Specifications for Forward Controls Design SRO Battery Tool: Manufacturer: Forward Controls Design Color: Silver/Green Fabric/Material: 17-4 Stainless Steel Features of Forward Controls Design SRO Battery Tool Maintains perpendicular driver alignment Compatible with 1/4in bit drivers Reduces cross-threading and slot wear Package Contents: Forward Controls Design SRO Battery Tool Removable handle Forward Controls Design SBT: SRO Battery Tool Silver/Green