Made of high quality material, and practical to use Speed controller for drill and mortise hammer. Easy to install and use, highly matches equipment. Suitable for : 0 611 216 703 GBH 5/40 DCE 0 611 230 703 GBH 5 DCE 0 611 313 703 5 CE 0 611 309 703 5 CE 0 611 311 703 10 C 0 611 223 704 GBH 10 DC 0 611 245 703 GBH 11 DE 0 611 316 703 11 E 0 611 316 796 11 E 0 611 307 003 4 Does not fit the following more recent models: GBH 5-40 DE(0 611 241 703) GBH 5-40 DCE(3 611 B64 001) 5 CE(3 611 C21 000) 5 E(0 611 318 703) Please compare your controller with the illustration. The Compatibility is for reference only.Please Compare The Part Number With Your One Before Purchasing! Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:As Shown Material:Plastic+Metal Package Contents: 1 x Speed Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.