pipeliners use what is call a T300 as stated above. to be honest with you for what reason i dont know. I use a tweeco 200 amp because i have little hand and when your gloves and your legs get sweaty,,and your knees on the ground,,that damn T300 with no insulators will lite your ass up on occasion. i cant use em,,,ive tried,,,the springs wear out to quick from heat. to each his own,,,i just prefer comfort over looks andyday,,but regardless,,,it aint what ya got its how you use it