Type a desAdvocate PetTest 21 Gauge Twist Top Lancets for dogs and cats were developed specifically to provide the best, most consistent blood sample for glucose testing on your pet. Our lancets fit virtually any lancing device, including lancing devices from other pet glucose systems. PetTest 21Gauge Twist Top Lancets can dramatically reduce """"short samples"""" that lead to the expense of wasted test strips and the frustrating of re-testing. Yields More Blood, More Often Precision Tri-Bevel Tip Minimizes Pain Fits in Virtually Any Lancing Device Singe Use, Sterile. For Capillary Blood Samples for Dogs and Cats Reduces """"Wasted Strips"""" Due To Insufficient Sample """"Clearly Superior Sampling"""""cription for this product here...