Wahl metal comb guides no more broken plastic comb guides. These new stainless steel comb guides simply glide through the coat. Best used in conjunction with a no 30, can also fit 15 or 10 blades. Set of 8 in storage case. Sizes range from 3mm 25mm. Compatible with a5 type blades andis, oster, groom professional hardy durable made from stainless steel glides with ease set of 8 range 3mm 25mm compatible with a5 type blades need advice on comb guides? Check out an introduction to comb guides. Check out award winning sue zecco demonstrating this product in the video below. .embed container position relative padding bottom 56.25% height 0 overflow hidden max width 100% .embed container iframe, .embed container object, .embed container embed position absolute top 0 left 0 width 100% height 100% wahl metal comb guide size chart colour size number red 3mm 1 purple 6mm 2 blue 10mm 3 orange 13mm 4 yellow 16mm 5 lilac 19mm 6 green 22mm 7 cyan 25mm 8