This is Replacement For parts Accessories.
Note2: 
 Not Compatible with Standard Square Blade
  Only Compatible With T-BLADE STAINLESS STEEL TRIMMER BLADE OR EXTREME PRECISION TRIMMER T-BLADE 
  It can fit prewave or Compatible With Wahl 9899 9899L 9899-100 5708 9864SS 9818A WA59300 1541 9994 SS2L 
 Not Compatible with Models:
 
5621, 5622, 5623, 8040, 8064, 8900, 8900-500, 9300, 9307, 9326, 9878, 9900, 9906, 9906C, 9910, 9916, 9916C, 9918, 9918C, 9918-6171, 9918D, 9920, 9925, 9940-502, 9961, 9962, 9966, 9971, 9985, 9990.
 Feature: Best performance that feels great Wet and dry use; for use in shower and easy cleaning
 Specification:
 Condition: NewThis guide comb adjusts from 5/64" - 7/16" (2mm-11mm). Cutting Lengths:2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm,11mm
 Package includes: 1pcs 10 Position Guide Comb Attachment (without package)