can you explain this sentence? This is designed as a bolt on bolt off system. What does the "a bolt on bolt off system" mean? also, why was the preposition "off" used in that? thanks.. you al

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jake

can you explain this sentence? This is designed as a bolt on bolt off system. What does the "a bolt on bolt off system" mean? also, why was the preposition "off" used in that? thanks.. you all are my good instructors.

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