4 pack 1.25 Knobs and 1.5 knobs (measurements are approximate diameters of widest part of knob) IOD hardwood knobs are a little different than the commonly available wooden knobs. Sure, they will work great for that simple pine dresser but they work equally well on your more sophisticated pieces. Threaded insert and precision screw for easy and accurate mounting. Elegant profile design for wider applications than most wooden knobs. Hardwood and subtle grain for best use with paint, stain and all your stamping applications.