McGard black security bolt set (4 bolts + 1 key) 12x1.5 thread. without cone. For Citroen/Peugeot/Toyota OE alloy wheels. Length to bolt head 32.3 mm. Washer diam 27.8 mm. Key 19 mm. Socket diam 28 mm. Do not use a pneumatic wrench to tighten the security bolts! Each package comes with an ID number. based on which you can order a spare key!