From Amazon
Manfrotto Chroma Key Green Gaffer Tape 50mm x 50m, Premium Quality Tape, Ultra-Strong Hold, Suitable For Keying Technique, StudioLink, Panoramic Background, LL LB7966
CVP
Manfrotto Gaffer Tape 50mm x 50m - Chroma Green
OnBuy
Chroma Key Green Gaffer Tape 50mm x 50m, Premium Quality Tape, Ultra-Strong Hold, Suitable For Keying Technique, StudioLink, Panoramic Background, LL