Why strain? Leverage Booster for Husqvarna/Stihl Battery & others Heavy Duty 1/4" steel shaftThe Enormous Leverage will make your work a lot easier and a lot easier on your body These tools are Heavy and We can Help! Heavy Duty 1 4" Stainless Shaft: This durable shaft ensures reliability and strength. Our Quick Clip Heavy Duty Large 1 1 2" model has an additional Eye bolt and wing nut included. With both options for use with many tools in your garage. Use the 2 1 2" Eye bolt long for most Husqvarna Stihl and others models. Fits on Most