This Phoenix Heavy Duty Aluminum Pruner Head is one of the lightest, most compact pruner heads available. Durable commercial grade design with a large cutting capacity of 1-3/4" Armature design makes cutting the most difficult tree limbs a snap. It has a high carbon steel blade and heavy duty aircraft quality spring that is sturdier and less apt to break or stretch with professional use. Plated steel parts to protect from rust. It can go directly on a pole or work with either Jameson or Marvin adapters. Fits all standard 1-1/4" poles.