TIME-SERT 2015 Metric Thread Repair Kit M20x1.5, comes with a quantity of 5 inserts part number 20153 which are 17mm long. Need more information on TIME-SERT thread repair kits? Visit ourauto repair blogsection on thread repair kits for tips, advice and all your thread repair questions answered. Just comment and we will be quick to respond. See theTIME-SERT products pdffor more information on thread repair kits and inserts. Some are listed for certain applications on cars, trucks and motorcycles. The pdf is a partial application list so feel free to email or call if we can assist with your particular need. We also accept inquiries regarding our daily TIME-SERT specials. Remember TIME-SERT is recommended by leading car manufacturers like the General Motors Corporation. In fact TIME-SERT is GM’s only authorized repair for head bolt threads.