31. Flintlock weapons were commonly used until the mid 19th century, when they were replaced by percussion lock systems . 32. "Brekke sluse " ( in the south of the system ) is Northern Europe's highest canal lock system . 33. In late January 2006, Chevrolet introduced a G-80 differential lock system as optional for most Colorado trim levels. 34. This is a disappointing combination, considering that all Chevrolet Silverados have four-wheel disk brakes with an anti-lock system . 35. Today the Erie Canal and its lock system is used primarily for recreational boat use among locals and tourists. 36. A strap lock system is used to provide a more secure attachment of a guitar strap to a guitar. 37. "Doug Golden did meet the test by locking his house and by using the cable-lock system on the guns. 38. The breech-lock was achieved by a propping system similar to the breech lock system used in the Glisenti Model 1910. 39. Both with and without the anti-lock system , drivers quickly develop a lot of faith in the Miata's ability to stop. 40. But traction control requires the purchase of a four-speed automatic overdrive transmission ( $ 820 ) and the anti-lock system .
