7pc Sensor / Thermo Switch Socket Set for Special Applications 3/8in.Dr sizes : 10 | 11 | 12 | 13| 14mm 1/2in.Dr sizes : 17 | 19mm. For top and side wired Temperature Sensors Thermo Switches and other components. Also suitable for nuts and bolts of bent pipes. Slot widths : 7.4 | 8.8 | 9.1 | 10.5 | 13.3 | 14.4 mm 7 x socket + 1 x socket rail
eBay