Description An essential tool for routine maintenance on rear brake calipers on BMW Mini. The set includes the special adaptor OEM No. 34 6 300/301 and reaction plate OEM No. 34 6 307. Additional Information Special reaction plate (OEM No. 34 6 307). 3/8″D. Complete with special adaptor 21 (also available separately – Part No. 3941) (OEM No. 34 6 300/301). Designed specifically to rewind the rear brake caliper on pre 2007 models (R50 Part Number: 3940
