About the interchangeable tool head: This lawn and garden ISP-square spade shovel tool head comes with the IP24DH-2-4" Inteletool aluminum D-Handle gripped telescopic pole. The tempered steel, Blade width 7". Blade type No.2. The square spade shovel tool head is designed with a corresponding acme thread that threads inside the telescopic pole. How the pole works with the head: When combined with the Inteletool telescopic pole, the tool head attaches and detaches and telescopic pole collapses for easy storage and transport. The Inteletool tool head (male) and the all fiberglass telescopic pole (female) both utilize the ACME thread in combination with a nylon collar lock on the pole to connect the tool heads to the telescopic pole for a secure, permanent feel. The Inteletool telescopic pole features a twist and lock innerlocking mechanism with an external nylon collar lock to prevent the pole from collapsing while in use. There are no predesignated stopping points for length. Can adjust to any desired length. Strongest telescopic pole on the market. Application: Dig and edge soil/peel and remove sod/scrape smooth surfaces. Firefighting, gardening, hunting, camping, hiking, off road (4x4 and ATV), disaster clean up, military, maintenance (building, ground), camping (RV and tent), backpacking and more. Special Feature: This square Spade tool is designed to be a part of your own custom built garden tool kit by Inteletool.