Tombow Power Adhesive Glue Tabs, 1/2 x 1/2 Inch, Acid-Free, 48 per Pack (52136) 48 ultra strong glue tabs Use on most surfaces including porous and non-porous. One tab holds up to 6.5 oz (0.41 lbs) Adhesive bond strengthens over time Acid-free, 1/2 x 1/2 Inch, 48/pack