Features and Benefits:?Specialty applications: Designed for high performance in soft woods and plywood?Versatile: For Selfeed bits 1" to 2-9/16"Get maximum performance from your Milwaukee? Selfeed drill bits in soft woods and plywood with the coarse thread feed screw. The 1/4 in. replacement feed screw is designed for Selfeed bits sized 1 in. to 2-9/16 in..use only Milwaukee specified replacement parts to achieve maximum life and performance from your Milwaukee Tool.