John Guest Emergency Repair Kit - STANDARDThe John Guest Emergency Repair Kit (Standard) has been put together with the bare essentials required to repair or plug off a leak while travelling. This kit is designed for 12mm (or 1 2") John Guest systems. The John Guest Emergency Repair Kit (Standard) includes the following: Quantity John Guest Part MFR ITEM NO 0. 5 metres John Guest Tubing 12mm BLUE PE12100B 0. 5 metres John Guest Tubing 12mm RED PE12100R 1 John Guest Stem Elbow 12mm PM221212E 1