SPRiT springs are manufactured in Korea with extreme precision and impeccable craftsmanship. Made with premium materials from both Korea and Japan, they are often regarded as the best aftermarket mechanical switch springs available.

SPRiT Slow Extreme Springs are linear springs that has a heavier starting weight relative to the Supreme springs. Coming in Extreme I, II, III, IV and V to differentiate between heavier starting weights with the same bottom out force.

Slow Extreme I
55g - Similar to MX Reds with slower curve and stability.
60g - Slower curved compared to Gateron Yellows. Optimised for tactile and linear. 
63.5g - Starts heavier, Slow curved & Slow force increase.
68g - Extreme Edition. Slow force increase.

Slow Extreme II
55g - Starts +2g heavier.
60g - Starts +2g heavier. (99.7% accuracy for SE)
63.5g - Starts +3g heavier. (99.7% accuracy for SE)
68g - Starts +3g heavier. 

Slow Extreme III
55g - Starts +4g heavier. 
60g - Starts +5g heavier.
63.5g - Starts +6g heavier. (99.7% accuracy for SE)
68g - Starts +6g heavier.

Slow Extreme IV
55g - Starts +7g heavier.
60g - Starts +8g heavier.
63.5g - Starts +7g heavier.
65g - Starts +7g heavier.
68g - Starts +8g heavier.

Slow Extreme V
55g - Starts +10g heavier.
60g - Starts +10g heavier.
63.5g - Starts +10g heavier.
65g - Starts +10g heavier.
68g - Starts 10g heavier.

Specifications:
99.5% Precision +- 0.3g / 99.7% Precision (SE) +- 0.1g
Each Pack Contain 100 Springs
Made In Korea
Compatible With All MX Based Switches