Made in USA Insty-Bit Shaft Adapter 1/4\” Quick-Change Hex Available in 1/4\”, 5/16\”, 3/8\” shaft sizes Product Description Specs Insty-Bit Shaft Adapter. Available in 1/4\”, 5/16\”, 3/8\” shaft sizes. Made in USA. Product Model # Insty-Bit Shaft Adapter – 1/4\” 83916 Insty-Bit Shaft Adapter – 5/16\” 83920 Insty-Bit Shaft Adapter – 3/8\” 83924 For California Residents: WARNING: Cancer & Reproductive Harm – www.P65Warnings.ca.gov WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood