product manual:
It is made of 6061T6 aluminum alloy and fully CNC machined for steam 550/600 helicopter. T-shaped reinforced structure, multiple  design, to meet the stringent flight load requirements, and effectively improve flight stability.
(Note: This part needs to be used with the Tarot 550/600 double push tail control group MK6015B.)
Related product number:
Metal tail rotor control arm set MK6021
Tail rotor control arm set / L arm / orange MK6067B
Tail rotor control arm set L arm / green MK6067C
550/600 metal double push L arm MK6015A
550/600 double push tail control group MK6015B

Product specifications:
Tail push mount × 1 (16 × 9 × 6mm) 1.2G
U-shaped mount × 1 (31 × 27 × 8.5mm) 2.8G
Belt edge bearing × 2 (Φ2.5 × Φ6 × 2.5mm)
M2.5×5MM cup head hex screw × 2
M2×6MM thread positioning pin×2
Metal L arm × 1 (34 × 11.5 × 2.5mm) 1.05G
4.75M2 ball head × 1