?No-risk Purchase?We promise no-risk purchase for you.And we provide 24 hour and 7 days after-sales service. If you have any confusion, please contact us without hesitation. ?Safe & Durable? This clipper guard is made of high-quality PC TPU material, which is not only durable for long lifetime use but safe for your skin. The inner structure is tested repeatedly for precise length position. ?Compatible Model?This length-adjustable guide comb is compatible for Philips OneBlade One Blade shaver QP2520 QP2530 QP2630. The package includes 1 adjustable guide comb, 1 skin guard, 1 body comb and 1brush. ?Easy to Use?Just need 3 steps for 5 seconds, the clipper guide comb will be ready. One: open the buckle back on the guide comb; Two:Put the head of trimmer into the top of YINKE guide comb; Three:Close the buckle.(If it's loose, pelase check again if you have put the trimmer to the top of guide comb thoroughly). ?14 Length Optional?This is the latest design of guide comb guard for Philips OneBlade. There are 14 length from 0.4 to 10mm adjustable. You don't need to buy many pieces guide combs for different sizes. Just own this one! Rotate the dial, then you will be the most handsome guy!.