Made by the anarchistic militia FAI in Catalonia. This grenade existed in two sizes.
On having pulled the ring, the tape of fabric was unwound during flight, arming an impact fuze.

Short model:
- body length 160 mm
- diameter 56 mm
- weight 650 gr.
- filling TNT

Large model:
- body length 190 mm
- diameter 58 mm
- weight 1150 gr.
- filling TNT

Photo below and info © Dani.