Rubberband Aeroplane Science Model Kit PR01-03 Mortise size is 5/16" W

Mortise size is 5/16" W x 2" L x 1-5/8" D

Cut Depth: 1/2" to 2-3/4

creating different textures

there was an antique-style decoy like the canvasback shown

Rubberband Aeroplane Science Model Kit PR01-03 Mortise size is 5/16" WEducational rubber band airplanes from PlaySTEAM provide the perfect hands on assembly experience to help your child learn about aeronautics and physics in a fun filled activity that the whole family will enjoy! This kit includes one each of low wing and seaplane models, along with two different rubber bands to adjust the flying power. A battery powered winder with a counter makes winding the propeller fast and easy to try different amounts of wind.