Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number REP CK-8 TEST KIT found under Test Kit Creatine Kinase Determi by Helena Laboratories Corporation. The National Stock Number assigned to this part is 6550013533754, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like REP CK-8 TEST KIT.