| Used (Like New) | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 0.663 | N/A | The MOC Shop (0) Request a Shipping Quote Minimum Order S$ 1.33 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 0.728 | S$ 17.85 | AbsoluteBrick (233) Shipping S$ 17.12 Minimum Order S$ 1.71 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 0.853 | N/A | Brickshaw (51) Request a Shipping Quote Minimum Order S$ 4.26 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 2 | S$ 0.86 | N/A | StackIt Bricks (17) Request a Shipping Quote Minimum Order S$ 11.94 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 0.873 | N/A | Brick Masterpiece (928) Request a Shipping Quote Minimum Order S$ 1.71 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 0.901 | S$ 21.83 | Noosa Brick Paradise (40) Shipping S$ 20.93 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 6 | S$ 0.904 | S$ 7.87 | Bremer Bricks (225) Shipping S$ 6.96 Minimum Order S$ 5.87 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 16 | S$ 0.976 | S$ 8.86 | BrickSick OLX / BLIK (60) Shipping S$ 7.89 Minimum Order S$ 3.29 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 2 | S$ 1.01 | S$ 23.39 | Studs & Bricks (70) Shipping S$ 22.38 Minimum Order S$ 3.55 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 3 | S$ 1.02 | N/A | The Database (35) Request a Shipping Quote Minimum Order S$ 2.62 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 11 | S$ 1.03 | S$ 15.24 | Brickslan (90) Shipping S$ 14.21 Minimum Order S$ 7.10 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 3 | S$ 1.06 | S$ 15.25 | Jsemin Bricks (18) Shipping S$ 14.19 Minimum Order S$ 7.10 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 3 | S$ 1.09 | S$ 8.20 | Corens Brick Emporium (189) Shipping S$ 7.10 Minimum Order S$ 1.42 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 1.10 | S$ 9.27 | the Five Brickers (281) Shipping S$ 8.17 Minimum Order S$ 2.13 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 4 | S$ 1.13 | S$ 7.88 | KOPEC KOSTEK (RB-Bricks) (196) Shipping S$ 6.75 Minimum Order S$ 16.88 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 14 | S$ 1.14 | N/A | Parkstad bricks (245) Request a Shipping Quote | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 9 | S$ 1.14 | N/A | Baarlo Bricks (74) Request a Shipping Quote | |
| Used (Good) | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 1.14 | S$ 19.61 | BrokBrickShop (82) Shipping S$ 18.47 Minimum Order S$ 3.55 | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 1.14 | N/A | BricksandMinifiguresUK (0) Request a Shipping Quote | |
| New | Red String with Coupling Points and End Studs 1 x 21 | 1 | S$ 1.14 | S$ 9.67 | BrickTasty (93) Shipping S$ 8.53 Minimum Order S$ 7.10 | |