0,5 kg of heel lifts from German oldest tannery "Gerberei Martin". Produced in classic oak-bark ground tanning production process. The heel lifts are punched out of the remains from sole production.
The heel lifts come in two sizes.
Size 1: 90 mm x 100 mm
Thickness: 2 - 3,5 mm (0,5 kg are about 20 lifts)
Thickness: 3,5 - 6 mm (0,5 kg are about 12 lifts)
Size 2: 90 mm x 90 mm
Thickness: 3,5 - 6 mm (0,5 kg are about 15 lifts)
The heel lifts have all different thickness. 0,5 kg comes out to a batch of 60 mm - 70 mm for size 1 and about 80 mm for size 2. They are enough for at least 1 pair of shoes.
Read an interesting article about the tannery:
https://shoegazing.com/2021/11/04/report-gerberei-martin-traditional-oak-bark-sole-leather-tannery/
If you have any questions or special needs, please ask. I have a wide range of shoemaker tools.