Riverside 3D Construction Paper Combo Case, 10 Assorted Colors, 9" x 12" and 12" x 18", 2,000 Sheets another one is active probe

another one is active probe

adjustable translucent observation cover

Auto Ranging

Replacement PPT1 1/32" (

Riverside 3D Construction Paper Combo Case, 10 Assorted Colors, 9" x 12" and 12" x 18", 2,000 Sheets another one is active probeSuper heavyweight groundwood construction paper 100% recycled content Paper has soft eggshell finish Durable sheets are ideal for 3D models and STEAM projects Acid free and recyclable Riverside 3D Construction Paper is the only super heavyweight construction paper made with 100% recycled fiber content. It is 75% heavier and five times stronger than the leading national brand, and ranks #1 in color consistency among all groundwood construction papers.