.The handlebar apply for grips diameter: 22-23mm (7/8″ inch) .Suitable for 12V battery installation motorcycles,motorbike,scooter. .Connection:Black(positive).Brown(negative).Blue(connect to the equipment,positive) .Output circuit protection, overload, reverse polarity and multiple protection, safety to use. .The item has the pilot lamp,when the switch turn on,the pilot lamp will be lighting,or the lamp will off. Product description Feature: Color:black Diameter:22mm Cable lenght:Approx.50cm Current:16A Volatge:12V Electrical: On-Off Case Material :aluminum-alloy+ anode sand blasting process. Mounting Holder apply for Grips Diameter:22-23mm/0.78″-0.90″ Connection:Black(positive);Brown(negative);Blue(connect to the equipment,positive)