Linemen's Sleeves Manufactured using the multiple-dip cement process, these sleeves are made to fit comfortably and provide outstanding electrical protection. The regular size sleeves are 26-1/4" long, while the large size sleeves are 28-1/2" long in length. Both are rated at a test voltage of 20,000 Volts for a maximum use voltage of 17,000 Volts, meeting ASTM D 1051 specifications.