Hello JeanMarc, Thanks for writing a review and we're sorry to have learned your issue. While we're not certain what model of vac you own, you may or may not need a separate adapter to use this hose. Moreover, it's not common for this hose to have a kink especially if it's brand new. Please review Home Depot return policy here: https://www.homedepot.ca/en/home/customer-support/return-policy.html. If you have any questions about our products, you may call our Customer Service at 1-800-474-3443 from Monday to Friday between 8:00 AM to 5:00 PM Central Time and we'll be glad to assist you. Thanks, RIDGID