LEGO Minifigure Sai (Dagger) (98139) has been used in at least 148 LEGO sets over the past 12 years, since it was first used in 2012.
LEGO Minifigure Weapon - Shamshir/Katana Sword (Square Guard), Gold [2 – DASHBRICK
LEGO 98139 FLAT Silver Minifigure Sai (Dagger) £0.99 - PicClick UK
LEGO® 98139 - Minifigure, Weapon Sai - Steentjeswereld
Sai Sword (98139) LEGO Minifigure Weapon
Lego 98139 Mini-Figure Ninja Sai Dagger (x2) - Free P&P
Brick Friends MOC 98139 Small Particle Educational Building Block Parts Made in China Parts Weapon Short Trident
LEGO PART 98139 Weapon Sai Rebrickable - Build with LEGO
40258 LEGO 98139 6270135 sztylet Sai - złoty 1szt 10015978847
LEGO part 98139 - Pearl Gold Minifig, Weapon Sai at BrickScout